Name: China High-tear Silicone Sponge Manufacturers Suppliers Factory - Sanpu Silicone
Brand: Sanpu
SKU: 301320436

uniform foaming of silicone sponge sheet

In the harsh operating environments of rail transit, industrial electrical systems, and advanced equipment, vibration and impact, alternating temperature fluctuations, prolonged aging, and flame retardancy safety represent the four major challenges faced by critical components such as traction motors, control cabinets, and electronic enclosures.

UltraTough® High Tear Silicone Sponge-a high-tear-resistant foam silicone-combines exceptional tensile toughness, superior insulation and sealing performance, and long-lasting flame-retardant stability. Specifically engineered for industrial applications with high vibration and stringent reliability requirements, it serves as the "invisible guardian" ensuring the safe operation of industrial equipment.

Core Performance:

✅ Ultra-high tensile and fatigue resistance without cracking: Featuring an innovative foam cross-linking technology, it achieves a elongation rate ≥250% and tensile strength>900 kPa, significantly surpassing conventional foam silicone. Under prolonged cyclic vibration and repeated compression deformation, it exhibits no cracking, chip loss, or performance degradation, making it perfectly suitable for motor start-stop operations and high-frequency vibration scenarios in equipment applications.

✅ Wide temperature stability with no deformation in extreme environments: Maintains stable resilience across an ultra-wide temperature range of-40°C to 250°C (-76°F to 600°F), showing no brittleness at low temperatures or softening at high temperatures, and remains unaffected by outdoor sun exposure, high-temperature equipment radiation, or extreme cold conditions.

✅ Excellent insulation and sealing performance, eliminating potential hazards: The closed-cell foam structure offers an insulation resistance of ≥10¹⁴ Ω·cm, with corona and breakdown resistance, effectively isolating current and heat. Through optimized design, it achieves IP67-level dust and water resistance, tightly sealing equipment gaps to prevent dust, moisture, and oil contamination.

✅ Long-lasting flame retardancy and aging resistance, ensuring safety and durability: With UL94 HB-grade flame retardancy, it does not spread upon fire and produces no toxic smoke; resistant to ozone and UV aging, maintaining high resilience and sealing performance even after 10 years of prolonged use, significantly reducing maintenance costs.

✅ Lightweight cushioning with noise and vibration reduction: With a foam density of ≤0.7 g/cm³, this lightweight design delivers exceptional shock absorption and noise reduction capabilities, absorbing ≥25 dB of vibration noise to protect precision components from impact damage.